General Description

The MAX270/MAX271 are digitally-programmed, dual second-order continuous-time lowpass filters. Their typical dynamic range of 96dB surpasses most switched capacitor filters which require additional filtering to remove clock noise. The MAX270/MAX271 are ideal for anti-aliasing and DAC smoothing applications and can be cascaded for higher-order responses.

Features

♦ Continuous-Time Filtering - No Clock Required

♦ Dual 2nd-Order Lowpass Filters

♦ Sections Independently Programmable: 1kHz to 25kHz

♦ 96dB Dynamic Range

♦ No External Components

♦ Cascadable for Higher Order

♦ Low-Power Shutdown Mode

♦ Track-and-Hold (MAX271)

Applications

Lowpass Filtering

Anti-Aliasing Filter

Output Smoothing

Low-Noise Applications

Anti-Aliasing and Track-and-Hold (MAX271)